Diesel starting booster



Patented Dec. 5, 1944 1 v DIESEL STARTING BOOSTER.

. John F. Greathonae, Plainfleld, N. 1., as signor to Mack Manufacturing Corporation, New York, N. Y., a corporation of Delaware 1 Application February 28,1944, Serial No. 524,328

9 Claims. (or 123-1875) The present invention relates to'starting aid mechanisms for internal combustion engines, and

embodies more specifically an improved device by means of which the starting of internal combustion engines, particularly of the Diesel type, may be greatly facilitated. More particularly, the

invention embodies a mechanism by means of which a supplementary and relatively highly a volatile fuel may be introduced into the air-intake manifold of the engine prior to and during the starting operation, thereby facilitating the starting, particularly in cold weather.

Devices of this general character have heretofore been designed but have not gone into general use because the structure of such devices has not enabled adequate control-of the supplementary fuel to be effected and also because the mechanism has not been such as to enable such supplementary fuel to be conveniently and effectively charged and maintained in such starting aid devices, v

An object of the present invention, accordingly, is to provide a device by means of which the starting of internal combustion engines may be aided and by means of which a supplementary charge of relatively volatile fuel may be introduced into the engine prior to and during the starting op- Other objects of the invention will be apparent as it is described in greater detail in connection with the accompanying drawings, wherein Figure 1 is a view in front elevation showing an engine starting aid mechanism constructed in accordance with the present invention, the mechanism being shown as mounted upon the air-- intake manifold of an internal combustion engine,

and

Figure 2 is a view in section, taken on the line 2-2 of Figure 1 and looking in the direction of the arrows.

Referring to the above drawings, the air-intake manifold of an internal combustion engine is shown at ID as being provided with a boss or land to which a starting aid device l2 is adapted to be secured. The device I! is formed with a chamber |3 which may be of cylindrical shape and which is formed, at its lower extremity, with means of bolts IE to the land I A gasket l8 may be provided to insure a fluid-tight'joint.

A lower portion of the chamber I3 is formed with a recess ll, terminating in a passage l8, in

the intermediate portion of which a valve chamber I9 is formed. The passage l8 communicates with a passage 20 connected to a tube 2| which extends into the manifold l0 and which may be formed with a restricted outlet at 22 in order to limit the rate at which the fuel is introduced into the manifold. The tube 2| is received within an aperture 23 formed in the land to facilitate the mounting of the device upon the manifold.

A cylindrical valve member 24 is provided withtween the opposite sides of the disc. A retaining ring 32 serves to maintain the disc within'the chamber l3 while a spring 33 normally urges the disc upwardly. The disc 29 is also formed with an aperture 34 therein to insure that free communication is maintained at all times between opposite sides of the disc 29.

In order to equalize the pressure between the manifold l0 and the chamber l3, a boss 35 is formed on the fitting l2 and receives a fitting 36 communicating with a tube 31 that is connected at 38 to the air -intake manifold. A loose hinge connection 39' is provided at the top of the device l2 and is hingedly connected to a cover 40 within which plunger 4| is slidable. The plunger 4| terminatesin a .manually operated handle 42 apertured at 43 and is formed with a central conduit 44 communicating with a tube 45 serving as a seat for a ball check valve 46. The lower end of the plunger 4| receives a fitting 41 formed with a disc 48 and a piercing member 49, the fit-- ting being formed with a central passage 50 communicating with the passage 44.

- A: retaining bale or clip 5| is provided to secure thecover in its normal closed position as illustrated in the drawings.

In operation, a container 52 is inserted in the chamber l3 and the plunger. 4| is depressed to cause the container to be pierced at both ends. The contents of the container thus escape and flow into the duct HI and, as controlled by the a bracket portion l4, adapted to be secured by 55 valve 24, into the engine manifold.

Prior to the piercing of the container, the control valve 24 should be closed. In piercing the container the plunger ll should be depressed to the limit of its travel and then withdrawn. The control valve 24 is opened for a predetermined length of time, after which the engine is started.-:-i"After the charge of volatile fuel is exhausted, the valve 24 is closed.

While the invention has been described with reference to the specific structure shown in the accompanying drawings, it is not to be limited save as defined in the appended claims.

I claim:

1. Engine starting aid mechanism for use with engine air inlet manifolds comprising a chamber, a passage between the chamber and manifold, a valve in the passage, a cover for the chamber releasable to permit a container to be inserted in the chamber, means in the chamber to pierce the container, and means associated with the chamber to cause the container to be pierced by the piercing mechanism.

2. Engine starting aid mechanism for use with engine air inlet manifolds comprising a chamber,

a passage between the chamber and manifold,

a valve in the passage, a cover for the chamber releasable to permit a container to be inserted in the chamber, means in the chamber to pierce the container, and a plunger on the cover to cause the container to be pierced by the piercing mechanism.

3. Engine starting aid mechanism for use with engine air inlet manifolds comprising a chamber, a passage between the chamber and manifold, a valve in the passage, a cover for the chamber releasable to permit a container to be inserted in the chamber, means in the chamber to pierce the container, a plunger on the cover, and a piercing tool actuated by the plunger.

4. Engine starting aid mechanism for use with engine air inlet manifolds com-prising a chamber, a passage between the chamber and manifold, a valve in the passage, a cover for the chamber releasable to permit a container to be inserted in the chamber, a piercing tool in the bottom of the chamber, a plunger on the cover. and a piercing tool actuated by the plunger.

5. Engine starting aid mechanism for use with engine air inlet manifolds comprising a chamber, a passage between the chamber and manifold, a

valve in the passage, a cover for the chamber releasable to permit a container to be inserted in the chamber, a second passage between the manifold and container adjacent the cover, a 5 piercing tool in the bottom of the chamber, a

plunger on the cover, and a piercing tool actuated by the plunger.

6. Engine starting aid mechanism for use with engine air inlet manifolds comprising a chamber, a passage between the chamber and manifold, a valve in the passage, a cover for the chamber releasable to permit a container to be inserted in the chamber, means in the chamber to pierce the container, and a plunger on the cover to cause the container to be pierced by the piercing mechanism and means in the chamber to eject the container when the cover is released.

7. Engine starting aid mechanism for use with engine air inlet manifolds comprising a chamher, a passage between the chamber and manifold, a valve in the passage, a cover for the chamber releasable to permit a container to be inserted in the chamber, means in the chamber to piece the container, 9. plunger on the cover to cause the container to be pierced by the piercing mechanism, a passage in the plunger between the chamber and the atmosphere, and a check valve in the passage.

8. Engine starting aid mechanism for use with engine air inlet manifolds comprising a chamber, a passage between the chamber and manifold, a valve in the passage, a cover for the chamber releasable to permit a container to be inserted in the chamber, means in the chamber to pierce the container, a plunger on the cover to cause the container to be pierced by the piercing mechanism, and means in the chamber to retain the piercing tool therein when the cover is released.

9. Engine starting aid mechanism for use with engine air inlet manifolds comprising a chamber, a passage between the chamber and manifold, means forming a restriction in the passage, a valve in the passage, a cover for the 45 chamber releasable to permit a container to be Y inserted in the chamber, means in the chamber to pierce the container, and means associated with the chamber to cause the container to be pierced by the piercing mechanism.

JOHN F. GREA'I'HOUSE. 

